Heel-trimming machine



(No Model.) 2 sheets-snee: 1.

O. L. NOBLE. lHEEL TRIMMING MACHINE'.

No. 543,349. Patented J'ul'y Z3. 1895..

(No Mode-1.) 2 Sheets-She-aetfz.

0. L. NOBLE. 'f HEEL TRIMMING MACHINE.

vPatented July 23,` 1895.

'//VVENTU/C?,

Y "UNITED u STATES vPyr-Erri* OFFIC.

OSCAR L. NOBLE, OF BOSTON, MASSACHUSETTS.

HEEL-TRIMMiNe MACHINE.

SPECIFICATION forming part ofrLetters Patent No. 543,349, dated uly 23, 1895.

Application'led rebrmy 23,1888. seria No. 264,911. (Noranda.)

To @ZZ wjtom it mayconcern:

Be it known that I, OSCAR L. NOBLE, of Boston, in the county ofiSuffolk, State ofMassachusetts, have invented certain new and chines, of which the following is a specification.4

This invention. relates to heel-,trimming machines employing arotary cutter `having at one end a rest for Athe top lift of a heel andv at the opposite end `a guard for vthe counter or upper ofthe boot or shoe to which the heel is affixed, said'guardbeing adapted to move sofasi(t oward an'd from the top-lift rest) to conform'to ftheQvariations which lexist between the width of the heel at the breastl is caused in its movements towardY and from the top lift to'follow the curvature of the cutting-edges-'of the cutter, and `maybe ad-4 j usted so as to follow in like manner the curvatures of cutters of different sizes and styles.

The invention also has for its object to provide a guard which `is adapted to yield orv move, as above indicated, with a rand-trimmer, which, although rotating with the cutter, partakes of the movements of the guard, toward and from the top-lift rest.

The invention also has for its object to pro# vide improved means for holding the knives in the cutter-head, giving Asaid. knives the necessary lclearance and 'adjusting them to compensate for the wear of their cuttingedges.

To these ends my invention consists in the several improvements which I will now pro-V ceed to describe and claim.

Of theaccompanying drawings, forming a part of this specification, Figure l represents a top planview ofV a portion of a heel-trimming machine embodying myimprovements.

Fig. 2 represents a section on line mw, Fig. 1. Fig. 3 represents a section on l1ne y y,F1g. 2.

Fig. 4 represents a section on line z z, Fig. 2. Fig. 5 represents a section on line x F1g. 3. Fig. 6 represents a section on line y y', Flg.

2. Fig. 7 represents a section on line'z z',

Fig. 3, looking toward thel right. Fig. 8 represents a perspective View of one of the randknives. Fig. 9 represents atop view of the same. Fig. 10 represents a section on line 'mi x2, Fig. 9.

In the drawings, ct represents a cutter-head which is mounted on a shaft b, journaled in suitable bearings on a supporting-frame or pedestal.' -One of said bearings is shown at c,

butl have not deemed it necessary to'show the entire supporting-frame or pedestal,v as the same may be of any of vthe forms Well known in'machines of this class. The cutter- Vhead here shown is composed of a collar or plate 2, attached by screws to a shoulder or enlargement 3 on the shaft b, and a collar 4 formed on'a sleeve 5, which is adapted to slide on'the shaft h toward and from the fixed collar 2, 'and is connected to said shaft by a spline and groove, so that it necessarilyy rotates with the shaft. The collars 2 4 are provided ontheir inner faces with segmentalribsv 6 6, which enter` grooves inthe side edges of the cutters 7 7, said cutters being clamped between the col1ars'2 4 by a nut 8, which is adjustable on the threaded outer end of the shaft h and holds the collar 4 at any desired distance from'the fixed collar 2, thus holding cutters of any desired width.`

The r'ibs 6 6 are eccentric to the axis of rotation of the shaft b, their eccentricity being such as to give the forward or cutting edgesof the cutters a greater radial distance from said axis than the heels of the cutters, thus giving their backs or outer surfaces the necessary clearance, as shown in Figs. 2 and 7.

e represents a stop-plate which isV held against the'fixed cutter-holding plate 2 by a 3 screw f passing through a segmental slot g in said plate. When said screw is tightened it holds the plate c rigidly, so that lugs e e on said plate serve as rigid supports for the heels of the cutters 7 7, and aid in preventing said cutters from moving backwardly. As the cutters become worn they are moved forward to compensate for Wear by the lugse' e', l which are correspondingly moved after loosl ening the sorewf. The cutters maybe adj usted by said lugs until they are worn out.

The top-lift rest is in this case a ring set in a rabbet in the shoulder 3, and having its pe- IOO ri phery grooved to form a wider face 10, which serves as a rest for the tread-surface of the top lift, and a narrower face 11, which is about flush with the cuttin g-ed ges of the cutters and serves as a rest for the edge of the top lift.

t' represents the counter-guard, which is formed to surround the shaft b and the end of the cutter next the heel-seat. The guard 'L' is preferably formed at its outer edge to enter the rand-crease between the rand-edge and counter of a boot or shoe. Said guard has an extension or arm z', which is loosely pivoted atj to a support 7a, located on the frame or pedestal of theV machine, the loose pivotal connection enabling the guard to oscillate freely at all times. The arm t" and the guard thereon are adapted to move on said support, the forward or work-supporting edge of the guard being thus enabled to move in a curve conforming approximately to the curvature of the cutting-edges of the cutters, so that the guard, while moving toward and from the top-lift rest in conforming to the varying width of the heel, retains in all positions substantially the same relation to the cutter, so far as its forward projection therefrom is concerned. The guard is internally of considerably-greater diameter than the shaft b which it surrounds, so that there is sufficient space between the guard and shaft for the described movements of the guard. The support k, to which the arm "L" is pivoted, is a slide which is adjustable in a direction parallel with the shaft b, so that the curve in which the guard travels may be caused to conform to different sizes or Widths of cutters and to differently-curved cutting-edges. Said slide is also adjustable toward and from the shaft b to adapt the guard to cutters of different diameters. To these ends the slide kis adapted to slide between dovetail-guides mm on a second slide n and is moved in either direction, and held wherever moved by an adjusting-screw o. The slide n is movable between guides r r on lthe supporting-frame or pedestal, and is operated by an adjustingscrew s. V

An important feature of my invention is a rotary rand-cutter, which not only rotates with the cutter-head, but moves with the guard t' toward and from the top-lift rest. Said cutter is composed of a sleeve 12, fitted 'ro rotate in the guard t', a flange or disk 13, formed on said sleeve, and rand-cutting knives 14, attached by screws l5 to said flange or disk.

The knives 14 are best shown in Figs. 8, 9, and 10, each having a reduced outer portion p and a shoulder q at one side and a beveled front end r', which forms a cutting-edge on the reduced portion p and the shoulder q. That portion ofV the cutting-edge which is formed on the reduced portion p is flush at its outer portion with the edge of the guardi (see Fig. 6) and enters the rand-crease with the guard, thus trimming the rand, the shoulder q assistingv in the trimming and preventing the formation of a burr orragged edge onv the rand. The' knives 14 are located between the cutters 7 7, as shown in Figs. 1 and 2.

The rand-trimmer is secured to the guard and caused to move laterally therewith by a ring a attached to the outer end of the sleeve 12 of the rand-cutter, said ring bearing against the smaller end ofthe guard, as shown .in

Figs. 1, 3, and 4.

The rand-cutteris caused to rotate with the cutter-head by a pin b on the disk 13 of the cutter-head entering a slot c in the knifeholding collar 4. (See Fig. 4.) Said slot is sufficiently larger than the pin b to permit the described movements. of the rand-cutter with the guard.

It will be seen that by the conjoint use of the laterally-movable guard and the rand-cutter rotating with the cutter-head, yet movable laterally with the guard, entire uniformity in the trimming of all parts of the rand is secured.

The arm 1l should be controlled by adjust-- able stop-screws d d in lugs f f on the slide la, set to limit its motion as desired.

I claim- 1. In a heel trimming machine, the combination with the rotary cutter head, of a coun-v ter guard, a single center or pivot behind the cutter on which said guard is free to oscillate, adjustable supports whereby said center or pivot may be adjusted at right angles with the axis of the cutter and in a direction parallel therewith, and a rand trimmer secured to said guard so as to oscillate therewith and rotativ'ely engaged with the cutter head, as

set forth.

2. The combination herein described, of a rotary cutter head, a support or slide lo which is adjustable in a direction parallel with the axis of the cutter head, a slide n which supports the slide k and is adjustable at right angles with the axis of the cutter head, a counter guard mounted on an arm which is loosely pivoted to the slide Zo at a single point behind the cutter so that the guard is at all times free to oscillate on said single pivotal point, and means for holding the slides kn in any positions to which they may be adj usted, whereby the work supporting portion of the guard is enabled to move in a curve which can be made by adjustment of the support to correspond to the curve of the cutting edges of different sizes, as set forth.

3. The combination herein described, of a rotary cutter head, a support or slide la which is adjustable in a direction parallel with the axis of the cutter head, a slide fn which supports the slide la and is adjustable at rightl angles with the axis of the cutter head, means for holding said slides in any position to which they may be adjusted, a counter guard supported by an arm which is loosely pivoted to said slide at a single point behind the cutter, whereby said guard may be adjusted to cut- IIO ter heads'of different lengths and diameters, the guard being free at all times to oscillate, and a rand cutter secured to the guard so as to oscillate therewith and rotatively engaged with the cutter head, as set forth.

4. The combination of arotary cutter head, the cutters of which are longitudinally curved, a guard-support or carriage outside of the periphery of the cutter head, means for adj ust. ing said guard support in two directions, Viz., parallel with the shaft of the cutter head and at right angles with said shaft, a guard mounted to move in the arc of a` circle on said support, and a rand cutter rotatively engaged wit-h the cutter head and secured to the guard, the rand cutter moving in the arc of a circle 'with the guard, so that both the guard and rand cutter conform to the longitudinal curvature of the cutting edges when moving toward and from the top-lift end thereof, as set forth.

5. The combination of the cutter head, the guard formed toencircle one end of the cut-l ter head, the support for the 4guard, and the rand cutter composed of the sleeve 12 engaged as described with the guard, the disk 13 on said sleeve and the knives 14, 14 on said disk between the cutters of the cutter head, and means substantially as described whereby the rand cutter and cutter and cutter head are rotatively engaged, as set forth.

6. The combination of the collars 2, 4 having the eccentric ribs, the grooved cutters engaged with said ribs, and the adjustable plate e having lugs or stops to bear against the heels of the cutters, as set forth.

7. In a cutter head, the combination of the collars 2,4 secured to a shaft and provided with the ribs on their inner sides, the cutters having grooves in their side edges formed to receive said ribsyand means for clamping the collars against the cutters, as set forth.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 21st day of February, A, D. 1888.

o's'cAR L. NOBLE.

Witnesses:

C. F. BROWN, A. D. HARRISON. y 

